Lexus GS300/400 (2000 year). Manual — part 90
I04067
Wire Harness Side
I04068
2
1
I04069
Wire Harness Side
BE–74
–
BODY ELECTRICAL
HEADLIGHT CLEANER SYSTEM
2375
4.
INSPECT HEADLIGHT CLEANER RELAY CIRCUIT
Disconnect the connector from the relay and inspect the con-
nector on wire harness side, as shown.
Tester connection
Condition
Specified condition
2 – Ground
3 – Ground
Constant
Continuity
4 – Ground
Ignition switch ON, light control switch in HEAD
and cleaner switch OFF
No continuity
4 – Ground
Ignition switch ON, light control switch in HEAD
and cleaner switch ON or daytime running light
system operating
Continuity
1 – Ground
Ignition switch OFF or ACC
No voltage
1 – Ground
Ignition switch ON
Battery positive voltage
5 – Ground
Constant
Battery positive voltage
If circuit is not as specified, inspect the circuits connected to oth-
er parts.
5.
INSPECT HEADLIGHT CLEANER MOTOR OPERA-
TION
Connect the positive (+) lead from the battery to terminal 2 and
the negative (–) lead to terminal 1, check that the motor oper-
ates.
NOTICE:
These tests must be performed quickly (within 20 seconds) to
prevent the coil from burning out.
If operation is not as specified, replace the motor.
6.
INSPECT HEADLIGHT CLEANER MOTOR CIRCUIT
Disconnect the connector from the cleaner motor and inspect
the connector on wire harness side, as shown.
–
BODY ELECTRICAL
HEADLIGHT CLEANER SYSTEM
BE–75
2376
Tester connection
Condition
Specified condition
2 – Ground
Constant
Continuity
If circuit is not as specified, inspect the circuits connected to oth-
er parts.
BE0HN–07
I01358
Wiper Motor
Washer Tank
Washer Motor
Combination Switch
Wiper and Washer Switch
Driver Side Junction Block
WIPER Fuse
WASHER Fuse
Ignition Switch
BE–76
–
BODY ELECTRICAL
WIPER AND WASHER SYSTEM
2377
WIPER AND WASHER SYSTEM
LOCATION
The vehicle shown in this illustration is ”GS400”.
All components of ”GS300” other than the ones used for engine are same as ”GS400”.
BE0HO–04
I04070
OFF
INT
LO
HI
Washer ON
I04034
Wire Harness Side
2
17
I04071
5
4
–
BODY ELECTRICAL
WIPER AND WASHER SYSTEM
BE–77
2378
INSPECTION
1.
INSPECT WIPER AND WASHER SWITCH CONTINU-
ITY
Switch position
Tester connection
Specified condition
OFF
7 – 16
Continuity
INT
7 – 16
Continuity
LO
7 – 17
Continuity
HI
8 – 17
Continuity
Washer OFF
–
No continuity
Washer ON
2 – 11
Continuity
If continuity is not as specified, replace the switch.
2.
INSPECT WIPER AND WASHER SWITCH CIRCUIT
Connector disconnected:
Disconnect the connector from the motor and inspect the con-
nector on the wire harness side, as shown.
Tester connection
Condition
Specified condition
2 – Ground
Constant
Continuity
17 – Ground
Ignition switch LOCK or ACC
No voltage
17 – Ground
Ignition switch ON
Battery positive voltage
If circuit is not as specified, inspect the circuits connected to oth-
er parts.
3.
INSPECT WIPER MOTOR OPERATION
Low speed:
Connect the positive (+) lead from the battery to terminal 5 and
the negative (–) lead to terminal 4, check that the motor oper-
ates at low speed.
If operation is not as specified, replace the motor.
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